Base | Representation |
---|---|
bin | 10001110001001111010… |
… | …011000100001011111011 |
3 | 11022201212122011120012110 |
4 | 101301033103010023323 |
5 | 130001303341010021 |
6 | 2332544402343403 |
7 | 154136011115136 |
oct | 21611723041373 |
9 | 4281778146173 |
10 | 1221101110011 |
11 | 430958819392 |
12 | 1787a835ab63 |
13 | 8b1c3141613 |
14 | 4315cb5b21d |
15 | 21b6c45b476 |
hex | 11c4f4c42fb |
1221101110011 has 8 divisors (see below), whose sum is σ = 1672138457104. Its totient is φ = 792065584800.
The previous prime is 1221101109959. The next prime is 1221101110057. The reversal of 1221101110011 is 1100111011221.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1221101110011 - 215 = 1221101077243 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1221101110081) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5500455340 + ... + 5500455561.
It is an arithmetic number, because the mean of its divisors is an integer number (209017307138).
Almost surely, 21221101110011 is an apocalyptic number.
1221101110011 is a deficient number, since it is larger than the sum of its proper divisors (451037347093).
1221101110011 is a wasteful number, since it uses less digits than its factorization.
1221101110011 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11000910941.
The product of its (nonzero) digits is 4, while the sum is 12.
Adding to 1221101110011 its reverse (1100111011221), we get a palindrome (2321212121232).
The spelling of 1221101110011 in words is "one trillion, two hundred twenty-one billion, one hundred one million, one hundred ten thousand, eleven".
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